Lifting-jack



W. WILLIAMS.

LIFTING JACK.

APPLICATION FILED SEPT. 10. 1920.

Patented Jan. 31

WILLIAM WILLIAMS; oriv nnnniiinnnna", vieroiarh. AUSTRALI 'assieiionor'one SIXTH TO SAMUEL RICHARD rnin'ciioiien; osrroonax, VICTORIA;AUSTRATJA.

LIFTING-J'ACK.

menses;

To aZZw/bQmit may concern:

Beitknownthat I, WILLIAM WILLIAMS,

a subject of the King of Great Britain and Ireland, 6130., residing atMurriimbee'na. in

the State of Victoria, Commonwealth of Australia, have invented certainnew and useful Improvements in Lifting-Jacks, for which I have filedfanapplication Australia,'l\lay 19,; 1921 No. 15,730;" and I do herebydeclare the following to bea full,

clear, and exact description of theinven tion, such as w llenablefothers skilled in i the art to whichit appertains to make and tolift a load. a

use the same.

This invention rela t to j liftingcks huh ing a fiked and a liftingpillar and whereby after each lifting stroke the lifting pillar locksitself in raised position. Means of adjustment are provided so, that thelifting pillar headyor load supporting part, will begin its work at theheight required, and the distance of lift of each stroke may be regiilatedr The ackmay be all netal, or wood,

the latter beingi useful to; form a fixed pillar base .of considerablearea but light weight; or metal extensions may be bolted on or beintegral with the base of the fixed pillar. Integral'with or boltedonthe fixed pillar are guides for the liftingpillar to make the latterwhen moved rise or fall in a vertical plane or nearly so. Other parts ofthe construction will be explained by reference to the drawingsherewithj in which the lifting jack isillustrated but the constructionmaybe varied in designs proportions and minor details of parts whileretaining matter hereinafter cla med. The drawings. are partlydiagrammatic.

Figure 1 is a side view of the jack ready FigureQ is a side {View of thejack showing'the parts at the end; of alifting stroke.

Figure 3 is'1a plan ofthe jack iii-horizontal section onlines E, Ethrough Fig;

ure 1 omitting the handle. I

Figure 41 is a sectional i iew through the.

fixed and lifting pillars.

lever. i

Figure 6 shows parts of my jack in dupli- Specification 0t LettersPatent.

but using only one handle. 7 v I F gure 7 shows inside viewpartof thelifting pillar modified, andadjacentparts.

I Patented J 3.11.3 9 1922. Application filed September 10, 1920. SerialNo. 409,412. r

cateq to explain lhow to lift a vehicleflaxle I or like broad loadbyapplying two jacks I lgL1IBi8 is a sectional plan of part-of,

Figure 7. I

The fixed pillar 2has a foot 1, and straps or loops 3, e which encloseand guide the lifting pillar 10 during vertical movement of the latter.

Strap 4 has an eye5 to hold the leg top 6 hereafter described. Thelifting pillar has a slot or a series of slots 9-or a hole 9 orfs eriesof holes alongits length, andhas a wide top 10 for load supportingpurposes.

Hinged to one end 11 of head 10 is a plate- 12, on which the load can besupported, but plate 12 can be swung out of working posion top 10 Theunder side ofplate 12 has flanges tion as indicated by'the adjacentarrow in Figure 1, so as to allow theloadto be lower,

12. Pillar 10" may have at its lower part a hook, eye, step, or the likefor connection 1 or support of the articlefito be lifted. .A"

transverse bolt 1O or the transverse part of a member 10 forming a pivotis engaged through a lifting/pillar slot?) or hole 9 and at each side ofpillar 10 the bolt 1O car! riespivotally a link 10 the other end ofwhich is pivoted to a lever 14 which is rej cessed and. is shown oflooped form or U, shape. In some cases instead of links lOP the Ushapedlinking member shown in Fig-vv ure 7 is used having arms or sides10.

In the fixed pillar there is a hole for a pivot bolt at 2 which alsopasses through the sides of lever '14:. Lever 1 1 is fulcruinedbythepivot boltat 2 and at-14 is pivoted to. links .10 or arms 10*. c

is moderate by' pressure of an attendants foot on its outer end 15, butfor heavier loads 1 thelever is to be grasped by a removable p l handle16 which when attached forms a. le- Figi'ire 5 is a vi wet the outer endofthe vei' extension. For attachment purposes this of which is to beengaged with the transverse end 15 of the lever. One of these slotsextends obliquely to the handle length, an-

7 other is about longitudinal with said length,

and another is about at right angles thereto. By utilizing a suitableslot the handle can be set to. extend in a suitable position foroperation, having in view the surrounding circumstances. The frontbearing 5 encloses the top 6 of leg 7 having at its base a foot 8 whichextends forwardly when required as in Figures 1 to 3, to help to supportthe loaded jack.

This foot can be swung to the side of the jack, or the leg can be raiseda little and rotated to the rear when it is not required for supportingpurposes.

In order to lift the whole of an axle and connected parts uniformly, orto lift a like specially wide load, two jack bodies are used but onlyone handle 16. K 7

Parts of two jacks are shown in Figure 6; the two levers 14 are spacedapart to the distance by adjustable framing consisting of bent slidebars 14*, 14 one at each side, at tached to the levers as by fitting onlugs 14 on the latterpThe lugs 14 are screw threaded, carrying nuts .21,the parts of each jack not shown in Figure 6 being as in Figure 1.Collars 14 on slide bars 14 14 hold-them in adjusted position, and eachcollar may have a set screw.

' hen the (or each) lifting pillar is lowered,'and loaded ready forlifting, the handle'is engaged with lever 14 or with the cross framingin Figure 6. The handle will be'operated to depress the outerend of the,(or'each) lever 14; This raises the movable pillar (or pillars) buttowards'the end of thelever stroke the links 10 (or the mem bers 10 areswung so that their pivots 14 at the end of each lever 14 pass theirdead centres, as will be understood from Figure 2 or Figure 7 causing aslight fall of the lifting pillar resulting in pressure being applied toeach lever 14 tending to swing its pivoted end as per arrow B. But atthe time stated the outer end of each lever 14 bears against the fixedpost 2 as inFigure 2 at 2 or a like stop so that the lever can move nofarther, and the jack becomes locked against lowering of the raisedload.

The detachable handle may be used at will to "release each lever, andthus each lifting pillar. I

There may be one or more additional fulcrum holes in lever 14 as at 2 sothat the lover is made adjustable by shifting the fulcrum pinto vary thelever effect under the application of power. V

The handle outer end has a hook which can be engaged under the base ofend 15 of lever 14 when the latter is lowered, so that by pulling thehandle the lever can be raised to lower'the lifting pillar.

The slots 9 are cut into that side of pillar 10 which is remote frompillar 2, pillar 10 having an unbroken edge alongside of the edge ofpillar 2.

It is important that there shall be easy detachment from the engagedslot of "the part 1O or 10 set therein, andeasy adjustmembers at Wand 10to be located in pillars having only small dimensions from the front 0to the rear D. i Having described this invention, what claimed byLetters' Patent is 1. In a lifting jack, a lifting-pillar in 1 front ofa fixed pillar, a lever of U shape pivotedto the fixed pillar and linkedtothe lifting pillar, and a handle having a serie's of end slotsextending in different directions for engagement of a suitable slot witha transverse part of the. lever.

2. Ina lifting jack, a lifting pillar, a fixed pillar linked to thelifting pillar,

guide loops on the fixed pillar through which loops the lifting pillarpasses, and a leg pivotally supported by one of saidloop's.

3. A lifting jack having a lifting pillar,

the front edge of which contains aseriesof slots,'a fixed pillar'behindthe lifting pillar and having projecting loops by which theliftingpillar is kept in alignment, a recessed lever pivoted to thefixed pillar, and linking means engaged in one of the said slots andpivoted to thelever, so that a stroke of the lever raises the liftingpillar and, locks it in raised position. 4. In a lifting jack, a fixedpillar having an enlarged foot, and upper and lower forwardly projectingloops which guide and retain a lifting pillar in alignment, a socket 011the lower loop, and an adjustable leg the top of which engages thesocket. 5. In a lifting j ack,the lifting pillar adjacent to a fixedpillar behind it, loops from the fixed pillar to guide the liftingpillar, an

adjustable lever pivoted to the fixed pillar,

adjustable linking means pivoted -to' the. lever, slots in theliftingpillar front edge in any, of which the linking means isengageable, and an adjustable leg the top of which is socketed in frontof the lifting pillar. Y 1

6. .A lifting jack having the construction in claim 6 combined with ahandle which has at one end a series of slots. extending in differentdirections, and at the other end a hook. L H p 7. Lifting jacks of thekind described each having a U shaped lever by which to lift apart byintermediate framing, and ahandle and lock a lifting pillar in raisedposition, to move the said framing to raise the lifting combined withtransverse framing and a pillar of each jack. 10 handle having slots inits end for the pur- In Witness whereof I have hereunto set 5 pose setforth. my hand.

8. The combination of two lifting jacks of the construction stated inclaim 3 spaced WILLIAM WILLIAMS.

